Hekman gang



H. GANG NONREPEAT MEANS FOR CALCULATING MACHINES May 17, 1949.

6 Sheets-Sheet 1 Filed March 1'7, 1948 May 17, 1949. H. GANG NONREPEATMEANS FOR CALCULATING MACHINES 6 Sheets-Sheet 2 Filed Mm 17, 1948INVENTO HERMAN GANG y B May 17, 1949. GANG 2,470,300

'NONREPEAT MEANS FOR CALCULATING MACHINES- Filed March 17, 1948 6Sheets-Sheet 5 May 17, 1949. H. GANG NONREPEAT MEANS FOR CALCULATINGMACHINES 6 Sheets-Sheet 4 Filed March 17, 1948 INVENTOR.

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NONREPEAT MEANS FOR CALCULATING MACHINES Filed March 17, 1948 6Sheets-Sheet 5 IN VEN TOR.

May 17,' 1949. H. GANG NONREPEAT MEANS FOR CALCULATING MACHINES FiledMarch 17, 1948 6 Sheets-Sheet 6 v INVENTOR. HER/WON Gfl/VG mar/v55:

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Patented May 17, 1949 NONREPEAT MEANS FOR- CALCULATING MACHINES HermanGang, Livingston, N. J assignor to Monroe Calculating Machine Company,Orange, N. J a corporation of Delaware Application March 17, 1948,Serial No. 15,374

Claims. 1

The invention relates to settable means for limiting the registeringaction of the differential actuators of a multi-cyclic calculatingmachine to a single cycle, by releasing the set digit entering keysand/or by bringing the actuators to rest.

According to the invention the control of a pre-set non-repeat key islocalized to operations initiated by a given key or keys; anotheroperation initiating key effects operation of the nonrepeat devicesindependently of the setting of the non-repeat key, and still otheroperation initiating keys may be provided in the operation of which nonon-repeat action will occur, irrespective of the setting of thenon-repeat key.

The invention consists in the novel construction and combination ofparts, as set forth in the appended claims.

In the accompanying drawings, illustrating the invention:

Figure 1 is a longitudinal vertical section of a calculating machine towhich the invention is shown as applied.

Figure 2 is a left side elevation of the machine, with casing removed.

Figure 3 is a horizontal section of the machine.

Figure 4 is a right side elevation of the machine, with casing removed.

Figure 5 is a detail elevation of the non-repeat key and plus-minus barmechanism.

Figure 6 is a detail elevation of the non-repeat key and a setup keymechanism.

Figure 7 is a detail elevation of the non-repeat key and a modified formof setup key mechanism.

Registrat on The invention is shown as applied to a calculating machinedisclosed in the co-pending application of Herman Gang, Serial No.8,54'7, filed February 16, 1948, and entitled Multiplier entering meansfor calculating machines.

According to said disclosure, amounts set up on the keyboard by thedepression of selected digit entering keys l8 (Fig. 1) are set in thedifferential actuators 5 through the medium of selector bails I9. Uponrotation of actuator shaft 4, forwardly or reversely, such amounts aretransmitted, additively or subtractively, through intermediate gearing545 to the numeral wheels of a register I3.

Actuator shaft 4 is driven by power from an electric motor I, through adifferential gear clutch and reversing unit I05, IIO (Fig. 2), gears 408and 355, shaft 350 and gearing 405 (Fig. 4) The elements I05 and N0 ofthedifierential gear unit are driven oppositely, and are engageablerespectively 'by arms H4, H3 of a clutch yoke III (Fig. 2), engagementof arm II4 with element I05 effecting additive rotation of theactuators, and engagement of element II3 with element II0 effectingdrive of the output gear 408 of the differential unit in the oppositedirection, and subtractive rotation of the actuators 5.

Calculation in any of the four rules of arithmetic may be controlled bythe manipulation of plus and minus bars I20, I2I (Figs. 4 and 5), havinglink connection I23 with a rock shaft I25. A setting plate I28, mountedupon shaft I25, is provided with lugs I28, engaging an extension I30 ofclutch yoke III. Depression of plus bar I20 will rock shaft I25 in aclockwise direction as viewed in Figure 5, rocking clutch yoke I I Iclockwise as viewed in Figure 2 and engaging arm I I4 with clutchelement I05. Depression of minus bar I2l will lock shaft I25 and clutchyoke III in the opposite direction, engaging arm II3 with clutch elementIIO.

Normally the clutch yoke is disengaged and the differential actuators 5are brought to rest as they next come into their full cycle positionfollowing manual release of key I20 or I2I. This is effected as follows:When shaft I25 is rocked, the rear end of a spring biased lever I34(Fig. 2) is depressed by contact with a roller I33 mounted on saidlever, of one or the other of two opposed cam faces formed on settingplate I28. A pawl I36 is mounted on the rearward arm of lever I34, saidpawl having a lug normally lying in front of a lug formed on a trigger3|. Rocking of lever I34 will depress pawl I36, allowing the lug thereofto fall beneath the lug of trigger 3I, so that upon release of theoperating key and return of lever I34 to normal position, trigger 3Iwill be lifted. In the normal position of the parts trigger 3| is inrestraining engagement with a spring biased pawl 25 mounted upon a stoparm 24. Lifting of trigger 3I will release pawl 25, allowing said pawlto be moved counterclockwise by its spring. A rock arm 22 is connectedby link 2I and crank arm 20 with the shaft 350, said arm oscillatingduring the cycling of the differential actuators. Pawl 25, having beenreleased, will fall behind a shoulder 21 of arm 22, as said arm movesthrough its rearward dead center position, corresponding to the fullcycle position of actuators 5. Continued movement of shaft 350 will nowdrive arms 22 and 24 as a unit in clockwise direction, and one of twoopposed cam faces formed in a rearward extension I44 of arm 24 will,through pin I45, centralize the clutch yoke III and break stems. A keyreleasing bar 43! extends laterally across the keyboard and isprovided-with lugsengaging the locking bails 432. Endwise movement ofthe bar 43 I will therefore rock bails432, against the tension of theirsprings, thereby releasing any keys l8 which have been set intooperative position.

Non-repeat Registrations initiatedby the plus and minus bars -l,20, 2 imay be limited .to -a single cycle by settablenomrepeat. means.

{Lhismeans is operatedby-a cam 4L9 (Fig. 4) mounted concentrically andhaving lost motion connection with a gear 4Z0, driven from thedifierenti al actuator ;:drive ;train by gearing 51:0. Due to the lostmotion connection, cam-M9 will engage a pendant.;4l,8,,mounted upon alever 42!, during the last portion of .an actuator cycle ;in eitherdirection ;of rotation. Pendant 418 is connectedwith. lever,4 2 l bya-stud 144,, and atits lower end has slotted engagement with the fulcrum-,'M5 of said lever. This slotted engagement Perm-its in e n en move n ot P a t which forms a normally ineiiective element of the non-repeattrain. When however pendant 4L8 is held asa rigidextension of lever 42!,cam 419 will operate said lever, and the ,llp'per end thereof willcontactone ,arm: 9f -a.-be1l crank 431), the other arm-of whichengagesthe-key releasing bar 53f ({Figs. 3. ftlldfl) so thatwoperationpi lever42l will clear the keyboard.

Bell crank lever 430 1135 engagement with a second bell crank lever #33,having an arm engaging a bar ii-31 i, extending transversely across themachine, said barat its other end engaging one arm of a .bell cranklever 435. The other arinof bell crank lever 435, is .designedto contactwith a -,cam extension 436 (Fig. 2) of an intermediately ,fulcru-medlever 43! having at its rearend pin andslotengagement with the trigger3;! of the stopping means. Operation of lever 42.] will therefore act totrip trigger 3!, so that the clutch yoke I ll will be neutralized andthe actuators brought to rest in full cycle position at .the ,end .oftheir first cycle of operation.

Pendant 418 may be held rigid withlever '42 under the joint controlofthe depressed plus and minus bar and of a preset non-repeat key 14 [ll(Figs. 4, 5 and 6). This joint control is effected through aguideabutment 14B pivotaily mountedupona slide plate Jill having cam surfacesengaged by pins 748;, i 45 mounted n he stems ofthe plus bar 129 andminus bar 'l2l respectively. The pivot point or guide abutment "146 isintermediate its length, the lower arm of the member being design'edtocontact with thelower end of the pendant Mil, while the upper arm of theabutment member is freely movable, so long as the non-repeat key 410remains undepressed. Under these conditions, depression of the plus orminus bar will effect an idle rocking of the abutment member 146 andpendant M8 will be allowed to pivot idly around point 7M, and lever {21will not be operated. When, however, nonrepeat key M0 lies indepressedposition, a lug 150 of said key will lie in the path of movement of theupper arm of abutment member 146, and upon operation of the plus orminus bar, clockwise rocking of the abutment member being prevented, thelower arm of this member will hold the lower end of pendant M8 in itsrearward position, holding the contact portion of said pendant-in thepath of movement of the cam 9, so that pendant M8 and lever 42l will actas a unit to efiect the non-repeat adjustments. The abutment member willbe locked in this position during the non-repeat operation by means ofaspring biased latch engageable with slide plate 14'! as said plate ismoved into operative position. During the action of the stopping means,latch 15] is released by engage- .mentthereofobysrocker 152 (Fig. 4)having operatingconnection (not shown) with stop arm 24. In order thatlatch 15! may not reengage slide plate 141 after the machine is stopped,in case the operation key is held depressed, a spring biased-blockingslide T53 (Fig. 5) is mounted on latch'fil and isdisplaced-byslide plate741 when said 'plate is moved to operative position, to al1ow-theengaging mg of the latch 15! to -drop back of the corresponding lug ofthe slide plate. Upon release of latch "151 however, blocking slide 1'53will sna overthe lug-of the slide-p'lateand prevent -reengagement bypivotal movement of theiatch.

For convenience of retraction, non-repeatkey 410 has connection througha yoke 41! (Fig. 6) with a repeat key 409, sothat depressionofeitherkey-willactto lif-t theother key. A toggle spring serves to holdyoke 4M in either adjusted'position.

"The control of the non-repeat ke being localized to operations efiectedby the plus-and-minus bars, it will be obvious that other keys maybeprovided whereby a number of consecutive cycles of operation -may beefiected without regard to the setting of the repeat and non-repeatkeys. It may also be desirable to provide an operation key manipulationof which will always result in a single cycle registration, irrespectiveor the setting of the repeat and non repeat keys. Such a key isdisclosed in co-pending application Serial No. 8,547, above referred'to,as a-means for entering multiplier or dividend values =in'to a set ofmultiplier storage wheels 52-4 (Fig. '3) or into the-register wheels I3, respectively. Further, this co-pending application discloses amodifiediorm of this value entering mechanism in which a cycle ofadditive registration is followed by a cycle of subtractiveregistration, the non-repeat means operating at the end of each cycle,:first to stop further additive rotation of the actuators and thereafterto stop the machine and clear the keyboard. The present invention isusable also 'in connection with this two cycle entering or setupmechanism, as indicated in Figures 4+6, but reference is made toapplication- Serial No. :8,'54,7 for the details thereof, since they arenot directly pertinent tovthe present invention The two cycle setup key525 (Fig. 6) will set the non-repeat mechanism to active position as'z-follows A pawl 1:54 is mounted on the stem .of the setup key 526 and,during depression of the key will engage one member of a toggle linkageT55, normally holding lever 156 in raised position. Toggle155 beingbroken by the action of pawl 16 i, lever 156 will be moved downwardly byits spring (not-shown), bringing apin 751 of said lever-into contactwith a cam face formed in a slide 158, the forward end of said slidehaving a shoulder engaging a pin in the lower arm of abutment member146. Depression of key 526 and breaking of toggle I55 will move slide158 rearwardly, moving abutment member 146 against the lower end ofpendant 418 to render the non-repeat devices operative. The lower end ofthe abutment member 146 may be moved into this position irrespective ofthe setting of the repeat and non-repeat keys, the adjustment being heldby engagement of a spring biased latch 159 with slide 158. At the end ofthe operation toggle 155 will be restored to normal condition and rocker152 will operate to release latch 159.

Control of the non-repeat devices by a onecycle setup means isillustrated in Figure '7, wherein parts similar to those shown inFigures 4-6 are given corresponding reference numbers, distinguished bythe exponent According to this modified form the setup key 526' isprovided with an extension overlying the pin "8 in the stem of plus barI20, so that depression of the setup key will initiate operation of thedifferential actuators. Key 526' is also provided with a pm 160overlying a cam portion of slide 158 and acting to move said sliderearward upon depression of the key, thus rocking guide abutment 146into its non-repeat position. The parts will be held in this position bylatch 159, and released by rocker 152', relatching of plate 158' beforethe restoration of the parts being prevented by a blocking slide 16 I,similar to the blocking slide previously described in relation to theplus-minus bar slide plate Ml.

I claim:

1. In a calculating machine having a register, cyclically operabledifferential actuators therefor, cycling means for said actuators,devices adjustable to enter values in said actuators, and an operationkey manipulable to control registering movement of the actuators by saidcycling means; normally inactive non-repeat means operable by saidcycling means to limit the registering action of said actuators to asingle cycle, including a settable non-repeat key, a member movable intime with the actuators, a transmission train driven by said member andincluding a normally inefiective element, a guide abutment settableconjointly by said non-repeat and operation keys to hold saidtransmission element in effective condition, a second operation key, anda slide operable under control of said second key to set the abutmentinto holding position independently of the non-repeat key.

2. A calculating machine according to claim wherein the first-namedoperation key is freely retractible upon manual release, and in which isprovided a slide plate operable by said firstnamed key and havingoperating connection with the guide abutment, a latch acting to holdsaid slide plate in operated position, and a member.

driven in timed relation with the movement of the differential actuatorsand contacting with and releasing the latch.

3. A calculating machine according to claim 2, wherein is provided aspring biased blocking slide mounted on the latch, said blocking slidebeing displaceable by the slide plate in the movement thereof tooperated position and acting upon release of the latch to preventrelatching of the operated slide plate.

4. A calculating machine according to claim 3, wherein is provided asecond latch, releasable by the timed latch releasing member and actingto hold the slide related to the second operation key in operatedposition.

5. A calculating machine according to claim 4, wherein the guideabutment consists of a member intermediately pivoted upon the slideplate, and in which a lug is provided on the non-repeat key, settablewith said key into the path of movement of the free arm of said member.

HERMAN GANG.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,354,839 Phinney Oct. 5, 19201,936,046 Chase Nov. 21, 1933 2,034,085 Chase Mar. 17, 1936 2,160,361Hilder May 30, 1939 2,302,932 Avery Nov. 24, 1942 2,391,089 Friden et a1Dec. 18, 1945 Certificate of Correction Patent No. 2,470,300. May 17,1949;

HERMAN GANG It is hereby certified that error appears in the printedspecification of the above numbered patent requiring correction asfollows:

Column 2, line 20, for the word lock read rock;

and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of the case in thePatent Oflice.

Signed and sealed this 11th day of October, A. D. 1949.

THOMAS F.- MURPHY,

Assistant O'ommz'ssioner of Patents.

Certificate of Correction Patent No. 2,470,300. May 17, 1949; HERMANGANG It is hereby certified that error appears in the printedspecification of the above numbered patent requiring correction asfollows:

Column 2, line 20, for the Word lock read rock;

and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of the casein the PatentOfiice.

Signed and sealed this 11th day of October, A. D. 1949.

THOMAS E MURPHY,

Assistant Uommissioner of Patents.

